Patents by Inventor Subir Debnath

Subir Debnath has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9574055
    Abstract: A compatibilized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds in an aqueous suspension. Polymer-silica reinforced masterbatches are prepared by addition of the compatibilized silica slurry using the formed compatibilized silica.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: February 21, 2017
    Assignee: LION COPOLYMER HOLDINGS, LLC
    Inventors: Mark Arigo, Subir Debnath
  • Patent number: 9267019
    Abstract: A rubber composition and a tire using the rubber composition utilizing a functionalized silica dry precipitated silica with a specific surface area in the range of 100 to 300 m2/gm treated with a plurality of silanes coupling agents to form a wet polymer silica masterbatch, then blending the masterbatch with a latex rubber component that includes a styrene-butadiene copolymer rubber or a blend of the styrene-butadiene copolymer rubber and another conjugated diene base rubber using a plurality of coupling agents simultaneously.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: February 23, 2016
    Assignee: LION COPOLYMER HOLDINGS, LLC
    Inventors: Mark Arigo, Subir Debnath, Jorge Soto
  • Patent number: 8987346
    Abstract: A high solids cross-linked ethylene propylene diene terpolymer latex consisting of 15 weight percent to 88 weight percent ethylene propylene diene terpolymer with a molecular weight from 1300000 Mw to 5000 Mw, 10 weight percent to 70 weight percent of a water, 1 weight percent to 15 weight percent of a surfactant, and 0.3 weight percent to 1.76 weight percent of a curative.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: March 24, 2015
    Assignee: Lion Copolymer Geismar, LLC
    Inventors: Michael J. Molnar, George A. Von Bodungen, Subir Debnath, Harold William Young, Jr., Zhiyong Zhu
  • Publication number: 20150031796
    Abstract: A method for blending functionalized silica with styrene butadiene rubber or ethylene propylene diene monomer rubber can include silica and an organosilane chemically and covalently bound to a surface of the silica. The organosilane can be derived from an organic silane with a functional group. A silica rubber masterbatch for complexing with an emulsion styrene butadiene rubber latex, a synthetic polymer, a natural polymer, or combinations thereof can include the functionalized silica with the organosilane or a blend of organosilanes chemically and covalently bound to a surface of the silica. Each organosilane can have an average tetrameric structure having a T3/T2 ratio of 0.3 to 0.9 or greater as measured by 29Si silicon cross polarization magic angle spinning nuclear magnetic resonance.
    Type: Application
    Filed: October 15, 2014
    Publication date: January 29, 2015
    Inventors: Subir Debnath, Harold William Young, JR.
  • Publication number: 20140378574
    Abstract: A high solids cross-linked ethylene propylene diene terpolymer latex consisting of 15 weight percent to 88 weight percent ethylene propylene diene terpolymer with a molecular weight from 1300000 Mw to 5000 Mw, 10 weight percent to 70 weight percent of a water, 1 weight percent to 15 weight percent of a surfactant, and 0.3 weight percent to 1.76 weight percent of a curative.
    Type: Application
    Filed: March 27, 2014
    Publication date: December 25, 2014
    Applicant: LION COPOLYMER GEISMAR, LLC
    Inventors: Michael J. Molnar, George A. Von Bodungen, Subir Debnath, Harold William Young, JR., Zhiyong Zhu
  • Publication number: 20140364534
    Abstract: Latex blend formulations that include a high solids cross-linked ethylene propylene diene terpolymer latex with acrylics, polyurethane, epoxy, or alkyd resin usable as a waterproofing material for roofs or usable in paints and adhesives.
    Type: Application
    Filed: April 16, 2014
    Publication date: December 11, 2014
    Applicant: LION COPOLYMER GEISMAR, LLC
    Inventors: Michael J. Molnar, George A. Von Bodungen, Subir Debnath, Harold William Young, JR., Zhiyong Zhu
  • Patent number: 8901204
    Abstract: Latex blend formulations that include a high solids cross-linked ethylene propylene diene terpolymer latex with acrylics, polyurethane, epoxy, or alkyd resin usable as a waterproofing material for roofs or usable in paints and adhesives.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: December 2, 2014
    Assignee: Lion Copoloymer Geismar, LLC
    Inventors: Michael J. Molnar, George A. Von Bodungen, Subir Debnath, Harold William Young, Jr., Zhiyong Zhu
  • Patent number: 8859638
    Abstract: A low pressure, low volatile, low energy method to make an ethylene, propylene diene terpolymer latex usable in paints, adhesives, and as a coating.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 14, 2014
    Assignee: Lion Copolymer Geismar, LLC
    Inventors: Michael J. Molnar, George A. Von Bodungen, Subir Debnath, Harold William Young, Jr., Zhiyong Zhu
  • Patent number: 8835536
    Abstract: A highly loaded silica wet masterbatch utilizing a functionalized silica dry precipitated silica with a specific surface area in the range of 100 to 300 m2/gm treated with a plurality of silanes coupling agents to form a wet polymer silica masterbatch, then blending the masterbatch with a latex rubber component that includes a styrene-butadiene copolymer rubber or a blend of the styrene-butadiene copolymer rubber and another conjugated diene base rubber using a plurality of coupling agents simultaneously.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: September 16, 2014
    Assignee: Lion Copolymer Holdings, LLC
    Inventors: Subir Debnath, Mark Arigo
  • Patent number: 8741987
    Abstract: A polymer masterbatch in latex form having nanomaterials and a compatibilized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds attached to the silica in an aqueous suspension.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: June 3, 2014
    Assignee: Lion Copolymer Holdings, LLC
    Inventors: Lawrence Douglas Harris, Mark Arigo, Subir Debnath, Jorge Soto
  • Publication number: 20130203915
    Abstract: A compatibilized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds in an aqueous suspension. Polymer-silica reinforced masterbatches are prepared by addition of the compatibilized silica slurry using the formed compatibilized silica.
    Type: Application
    Filed: August 24, 2012
    Publication date: August 8, 2013
    Applicant: LION COPOLYMER, LLC
    Inventors: Mark Arigo, Subir Debnath
  • Publication number: 20130203917
    Abstract: A polymer masterbatch in latex form having nanomaterials and a compatibilized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds attached to the silica in an aqueous suspension.
    Type: Application
    Filed: August 24, 2012
    Publication date: August 8, 2013
    Applicant: LION COPOLYMER, LLC
    Inventors: Lawrence Douglas Harris, Mark Arigo, Subir Debnath, Jorge Soto
  • Publication number: 20130203914
    Abstract: A highly loaded silica wet masterbatch utilizing a functionalized silica dry precipitated silica with a specific surface area in the range of 100 to 300 m2/gm treated with a plurality of silanes coupling agents to form a wet polymer silica masterbatch, then blending the masterbatch with a latex rubber component that includes a styrene-butadiene copolymer rubber or a blend of the styrene-butadiene copolymer rubber and another conjugated diene base rubber using a plurality of coupling agents simultaneously.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 8, 2013
    Applicant: LION COPOLYMER, LLC
    Inventors: Subir Debnath, Mark Arigo
  • Publication number: 20120322925
    Abstract: A rubber composition and a tire using the rubber composition utilizing a functionalized silica dry precipitated silica with a specific surface area in the range of 100 to 300 m2/gm treated with a plurality of silanes coupling agents to form a wet polymer silica masterbatch, then blending the masterbatch with a latex rubber component that includes a styrene-butadiene copolymer rubber or a blend of the styrene-butadiene copolymer rubber and another conjugated diene base rubber using a plurality of coupling agents simultaneously.
    Type: Application
    Filed: July 27, 2012
    Publication date: December 20, 2012
    Applicant: LION COPOLYMER, LLC
    Inventors: Mark Arigo, Subir Debnath, Jorge Soto
  • Publication number: 20120322924
    Abstract: A method for making a high silica loaded polymeric composition by forming a pretreated silica by creating an aqueous slurry with a silica and a silane, mixing a solvent with the silane and adding the mixture to the silica, or spraying silane on the silica allowing the liquids to be absorbed into the silica. The method includes coupling the silane onto the silica, adding the pretreated silica to a carrier, forming a slurry, heating the slurry, and mixing preheated polymeric rubber latex with the heated slurry to form a latex slurry, then blending a coagulant with the latex slurry while stirring and allowing coagulation of the latex slurry to form the high silica loaded polymeric rubber composite.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 20, 2012
    Applicant: LION COPOLYMER, LLC
    Inventors: Mark Arigo, Jorge Soto, Subir Debnath
  • Publication number: 20080246192
    Abstract: A polyester composition comprising a reaction product of: 65-94.5 weight percent of a polyester having a weight average molecular weight of greater than or equal to 70,000 g/mol, of the formula wherein each T is a C6-10 aromatic group derived from a dicarboxylic acid and D is a C2-4 aliphatic group derived from a dihydroxy compound; 5-30 weight percent of an impact modifier copolymer comprising units derived from a C2-20 olefin and units derived from a glycidyl(meth)acrylate; and 0.5-5 weight percent of a particulate fluoropolymer encapsulated by a copolymer having a Tg of greater 10° C. and comprising units derived from a monovinyl aromatic monomer and units derived from a C3-6 monovinylic monomer; and wherein the composition has less than 70 weight percent of a polyester derived from a dicarboxylic acid and an aliphatic diol selected from the group consisting of 1,3-propylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene glycol, cyclohexanediol, and 1,4-cyclohexanedimethanol.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 9, 2008
    Inventors: Sung Dug Kim, Subir Debnath
  • Publication number: 20080246191
    Abstract: A polyester composition comprising a reaction product of 50 to 95 wt. % of a polyester having a number average molecular weight of greater than or equal to 42,450 g/mol, wherein the polyester is of the formula wherein T is a divalent C6-10 aromatic group derived from a dicarboxylic acid, and D is a divalent C2-4 aliphatic group derived from a dihydroxy compound; 16 to 25 wt. % of a carboxy reactive impact modifier; and more than 0 to 5 wt. % of a fluoropolymer; wherein the composition has less than 70 wt. % of a polyester derived from a dicarboxylic acid and an aliphatic diol component selected from 1,3-propylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene glycol, cyclohexanediol, and 1,4-cyclohexanedimethanol.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 9, 2008
    Inventors: Parminder Agarwal, Subir Debnath, Josephus Gerardus M. van Gisbergen
  • Publication number: 20070213471
    Abstract: An article for contact with a liquid fuel, comprising a composition comprising a polyester reacted with a carboxy-reactive material, the product of said reaction having increased solvent resistance relative to the initial polyester. The article can be in the form of a container or fibers.
    Type: Application
    Filed: August 18, 2006
    Publication date: September 13, 2007
    Applicant: General Electric Company
    Inventors: Sung Dug Kim, Subir Debnath